28135241841 has 24 divisors (see below), whose sum is σ = 43648403904. Its totient is φ = 16073571360.

The previous prime is 28135241831. The next prime is 28135241867. The reversal of 28135241841 is 14814253182.

It is not a de Polignac number, because 28135241841 - 2⁷ = 28135241713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28135241841.

It is not an unprimeable number, because it can be changed into a prime (28135241831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 696391 + ... + 735683.

It is an arithmetic number, because the mean of its divisors is an integer number (1818683496).

Almost surely, 2^28135241841 is an apocalyptic number.

28135241841 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28135241841 is a deficient number, since it is larger than the sum of its proper divisors (15513162063).

28135241841 is a wasteful number, since it uses less digits than its factorization.

28135241841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44181 (or 44174 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The spelling of 28135241841 in words is "twenty-eight billion, one hundred thirty-five million, two hundred forty-one thousand, eight hundred forty-one".